A method for installing a pre-cast/pre-stressed concrete and steel pile
used in the construction of pile foundations and the resulting installed
pile that has its distal end anchored to bedrock is disclosed. After the
pile is located on bedrock, a first hole is drilled into bedrock that is
of sufficient depth to accommodate a lower portion of the steel pipe that
extends below the concrete pile and contains a plurality of orifices. A
second hole is drilled into bedrock that is below and concentric to the
first hole and has a diameter than that is usually less than that of the
first hole. The second hole forms an anchoring socket to accommodate an
anchoring anchor. Grout is injected into the steel pile and anchoring
socket until the grout fills the voids in the interior of the steel pipe.
Grout also seeps through the orifices in the lower end of said steel pipe
and fills the second hole, and an annular space between the outer
circumference of the steel pipe and the walls of the first hole.